1
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Mo MY, Wang XJ, Shen RZ, Hu CY, Li XC, Li GW, Liu LT. Enantiospecific Analysis of Carboxylic Acids Using Cinchona Alkaloid Dimers as Chiral Solvating Agents. Anal Chem 2024; 96:7487-7496. [PMID: 38695134 DOI: 10.1021/acs.analchem.4c00053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2024]
Abstract
Cinchona alkaloid derivatives as Brønsted base catalysts have attracted considerable attention in the field of asymmetric catalysis. However, their potential application as chiral solvating agents has not been described. In this research, we investigated the use of the Cinchona alkaloid dimer, namely, (DHQ)2PHAL, as a chiral solvating agent for discerning various mandelic acid derivatives through 1H NMR spectroscopy. The addition of catalytic amounts of DMAP facilitated this process. Our experimental results demonstrate that dimeric (DHQ)2PHAL exhibits remarkable chiral discrimination properties regarding the diagnostic split protons of 1H NMR signals (including 24 examples, up to 0.321 ppm). Furthermore, it serves as an excellent chiral discriminating agent and provides good resolution for racemic chiral phosphoric acid as determined by 31P NMR spectroscopy. The quality of enantiodifferentiation has also been evaluated by means of the parameter "resolution (Rs)". Significantly, this class of CSAs based on (alkaloid)2linker systems with an azaaromatic linker can be directly employed, which is commercially available in an enantiopure form at very low cost and exhibits promising potential in determining the enantiopurity of α-hydroxy acids by chemoselective and biocatalytic reactions.
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Affiliation(s)
- Ming-Yang Mo
- School of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
- College of Chemistry and Chemical Engineering, Henan Engineering Research Center for Green Synthesis of Pharmaceuticals, Shangqiu Normal University, Shangqiu 476000, China
| | - Xiao-Juan Wang
- College of Chemistry and Chemical Engineering, Henan Engineering Research Center for Green Synthesis of Pharmaceuticals, Shangqiu Normal University, Shangqiu 476000, China
| | - Ren-Zeng Shen
- College of Chemistry and Chemical Engineering, Henan Engineering Research Center for Green Synthesis of Pharmaceuticals, Shangqiu Normal University, Shangqiu 476000, China
| | - Chang-Yan Hu
- College of Chemistry and Chemical Engineering, Henan Engineering Research Center for Green Synthesis of Pharmaceuticals, Shangqiu Normal University, Shangqiu 476000, China
| | - Xue-Chun Li
- College of Chemistry and Chemical Engineering, Henan Engineering Research Center for Green Synthesis of Pharmaceuticals, Shangqiu Normal University, Shangqiu 476000, China
| | - Gao-Wei Li
- School of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
- College of Chemistry and Chemical Engineering, Henan Engineering Research Center for Green Synthesis of Pharmaceuticals, Shangqiu Normal University, Shangqiu 476000, China
| | - Lan-Tao Liu
- School of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
- College of Chemistry and Chemical Engineering, Henan Engineering Research Center for Green Synthesis of Pharmaceuticals, Shangqiu Normal University, Shangqiu 476000, China
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2
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Beng TK, Eichwald J, Fessenden J, Quigley K, Sharaf S, Jeon N, Do M. Regiodivergent synthesis of sulfone-tethered lactam-lactones bearing four contiguous stereocenters. RSC Adv 2023; 13:21250-21258. [PMID: 37456540 PMCID: PMC10340014 DOI: 10.1039/d3ra03800a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 07/05/2023] [Indexed: 07/18/2023] Open
Abstract
Sulfone-tethered lactones/amides/amines display a diverse spectrum of biological activities, including anti-psychotic and anti-hypertensive. Sulfones are also widely present in functional materials and fragrances. We therefore reasoned that a regiodivergent and stereocontrolled strategy that merges the sulfone, lactone, and lactam motifs would likely lead to the discovery of new pharmacophores and functional materials. Here, we report mild conditions for the sulfonyllactonization of γ-lactam-tethered 5-aryl-4(E)-pentenoic acids. The annulation is highly modular, chemoselective, and diastereoselective. With respect to regioselectivity, trisubstituted alkenoic acids display a preference for 5-exo-trig cyclization whereas disubstituted alkenoic acids undergo exclusive 6-endo-trig cyclization. The lactam-fused sulfonyllactones bear angular quaternary as well as four contiguous stereocenters. The products are post-modifiable, especially through a newly developed Co-catalyzed reductive cross-coupling protocol.
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Affiliation(s)
- Timothy K Beng
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Jane Eichwald
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Jolyn Fessenden
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Kaiden Quigley
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Sapna Sharaf
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Nanju Jeon
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Minh Do
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
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3
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Nájera C, Foubelo F, Sansano JM, Yus M. Enantioselective desymmetrization reactions in asymmetric catalysis. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132629] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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4
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Abstract
The first example for the electrochemical cis‐dichlorination of alkenes is presented. The reaction can be performed with little experimental effort by using phenylselenyl chloride as catalyst and tetrabutylammoniumchloride as supporting electrolyte, which also acts as nucleophilic reagent for the SN2‐type replacement of selenium versus chloride. Cyclic voltammetric measurements and control experiments revealed a dual role of phenylselenyl chloride in the reaction. Based on these results a reaction mechanism was postulated, where the key step of the process is the activation of a phenylselenyl chloride‐alkene adduct by electrochemically generated phenylselenyl trichloride. Like this, different aliphatic and aromatic cyclic and acyclic alkenes were converted to the dichlorinated products. Thereby, throughout high diastereoselectivities were achieved for the cis‐chlorinated compounds of >95 : 5 or higher.
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Affiliation(s)
- Julia Strehl
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26111, Oldenburg, Germany
| | - Cornelius Fastie
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26111, Oldenburg, Germany
| | - Gerhard Hilt
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26111, Oldenburg, Germany
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5
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Okuno K, Hiraki M, Chan B, Shirakawa S. Non-Enzymatic Kinetic Resolution and Desymmetrization of α-Quaternary Carboxylic Acids via Chiral Bifunctional Sulfide-Catalyzed Bromolactonization. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Ken Okuno
- Department of Environmental Science, Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14, Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Mana Hiraki
- Department of Environmental Science, Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14, Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Bun Chan
- Graduate School of Engineering, Nagasaki University, 1-14, Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Seiji Shirakawa
- Department of Environmental Science, Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14, Bunkyo-machi, Nagasaki 852-8521, Japan
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6
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Hiraki M, Okuno K, Nishiyori R, Noser AA, Shirakawa S. Efficient asymmetric syntheses of α-quaternary lactones and esters through chiral bifunctional sulfide-catalyzed desymmetrizing bromolactonization of α,α-diallyl carboxylic acids. Chem Commun (Camb) 2021; 57:10907-10910. [PMID: 34590630 DOI: 10.1039/d1cc03874e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Asymmetric halolactonizations are powerful methods for the syntheses of chiral lactones. Catalytic and highly enantioselective halolactonizations of α-allyl carboxylic acids, however, continue to present a formidable challenge. Herein, we report the chiral bifunctional sulfide-catalyzed desymmetrizing bromolactonizations of α,α-diallyl carboxylic acids. These reactions efficiently produced chiral α-quaternary lactones and esters.
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Affiliation(s)
- Mana Hiraki
- Department of Environmental Science, Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan.
| | - Ken Okuno
- Department of Environmental Science, Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan.
| | - Ryuichi Nishiyori
- Department of Environmental Science, Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan.
| | - Ahmed A Noser
- Department of Environmental Science, Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan. .,Department of Chemistry, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Seiji Shirakawa
- Department of Environmental Science, Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan.
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7
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Jiang X, Xu X, Xu W, Yu P, Yeung YY. Catalytic Enantioselective Halocyclizations to Access Benzoxazepinones and Benzoxazecinones. Org Lett 2021; 23:6316-6320. [PMID: 34342993 DOI: 10.1021/acs.orglett.1c02117] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report a catalytic asymmetric halocyclization protocol to furnish benzoxazepinones and benzoxazecinones using (DHQ)2PHAL as the catalyst. Various halogenated benzoxazepinones and benzoxazecinones were achieved in excellent yields and enantioselectivities under mild conditions. A cocrystal structure of the substrate and the catalyst was studied.
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Affiliation(s)
- Xiaojian Jiang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Xi Xu
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Wei Xu
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Pei Yu
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Ying-Yeung Yeung
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
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8
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9
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Li J, Kwon E, Lear MJ, Hayashi Y. Halogen Bonding of
N
‐Halosuccinimides with Amines and Effects of
Brønsted
Acids in Quinuclidine‐Catalyzed Halocyclizations. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202100080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jing Li
- Department of Chemistry, Graduate School of Science Tohoku University Sendai 980-8578 Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules, Graduate School of Science Tohoku University Sendai 980-8578 Japan
| | - Martin J. Lear
- School of Chemistry University of Lincoln, Brayford Pool Lincoln LN6 7TS United Kingdom
| | - Yujiro Hayashi
- Department of Chemistry, Graduate School of Science Tohoku University Sendai 980-8578 Japan
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10
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Van Lommel R, Bock J, Daniliuc CG, Hennecke U, De Proft F. A dynamic picture of the halolactonization reaction through a combination of ab initio metadynamics and experimental investigations. Chem Sci 2021; 12:7746-7757. [PMID: 34168827 PMCID: PMC8188468 DOI: 10.1039/d1sc01014j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 04/22/2021] [Indexed: 01/23/2023] Open
Abstract
The halolactonization reaction is one of the most common electrophilic addition reactions to alkenes. The mechanism is generally viewed as a two-step pathway, which involves the formation of an ionic intermediate, in most cases a haliranium ion. Recently, an alternative concerted mechanism was proposed, in which the nucleophile of the reaction played a key role in the rate determining step by forming a pre-polarized complex with the alkene. This pathway was coined the nucleophile-assisted alkene activation (NAAA) mechanism. Metadynamics simulations on a series of model halolactonization reactions were used to obtain the full dynamic trajectory from reactant to product and investigate the explicit role of the halogen source and solvent molecules in the mechanism. The results in this work ratify the occasional preference of a concerted mechanism over the classic two-step transformation under specific reaction conditions. Nevertheless, as the stability of both the generated substrate cation and counter-anion increase, a transition towards the classic two-step mechanism was observed. NCI analyses on the transition states revealed that the activating role of the nucleophile is independent of the formation and stability of the intermediate. Additionally, the dynamic insights obtained from the metadynamics simulations and NCI analyses employed in this work, unveiled the presence of syn-directing noncovalent interactions, such as hydrogen bonding, between the alkenoic acid and the halogen source, which rationalized the experimentally observed diastereoselectivities. Explicit noncovalent interactions between the reactants and a protic solvent or basic additive are able to disrupt these syn-directing noncovalent interactions, affecting the diastereoselective outcome of the reaction.
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Affiliation(s)
- Ruben Van Lommel
- Eenheid Algemene Chemie (ALGC), Department of Chemistry, Vrije Universiteit Brussel (VUB) Pleinlaan 2 1050 Brussels Belgium
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven Celestijnenlaan 200F Leuven Chem&Tech, box 2404 3001 Leuven Belgium
| | - Jonathan Bock
- Organic Chemistry Research Group (ORGC), Department of Chemistry, Department of Bioengineering Sciences, Vrije Universiteit Brussel (VUB) Pleinlaan 2 1050 Brussels Belgium
| | - Constantin G Daniliuc
- Institute for Organic Chemistry, University of Muenster Corrensstr. 40 48149 Münster Germany
| | - Ulrich Hennecke
- Organic Chemistry Research Group (ORGC), Department of Chemistry, Department of Bioengineering Sciences, Vrije Universiteit Brussel (VUB) Pleinlaan 2 1050 Brussels Belgium
| | - Frank De Proft
- Eenheid Algemene Chemie (ALGC), Department of Chemistry, Vrije Universiteit Brussel (VUB) Pleinlaan 2 1050 Brussels Belgium
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11
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Bock J, Guria S, Wedek V, Hennecke U. Enantioselective Dihalogenation of Alkenes. Chemistry 2021; 27:4517-4530. [DOI: 10.1002/chem.202003176] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 09/01/2020] [Indexed: 01/17/2023]
Affiliation(s)
- Jonathan Bock
- Organic Chemistry Research Group (ORGC) Department of Chemistry and Department of Bioengineering Sciences Vrije Universiteit Brussel (VUB) Pleinlaan 2 1050 Brussels Belgium
| | - Sudip Guria
- Organic Chemistry Research Group (ORGC) Department of Chemistry and Department of Bioengineering Sciences Vrije Universiteit Brussel (VUB) Pleinlaan 2 1050 Brussels Belgium
| | - Volker Wedek
- Organic Chemistry Research Group (ORGC) Department of Chemistry and Department of Bioengineering Sciences Vrije Universiteit Brussel (VUB) Pleinlaan 2 1050 Brussels Belgium
| | - Ulrich Hennecke
- Organic Chemistry Research Group (ORGC) Department of Chemistry and Department of Bioengineering Sciences Vrije Universiteit Brussel (VUB) Pleinlaan 2 1050 Brussels Belgium
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12
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Wang H, Zhong H, Xu X, Xu W, Jiang X. Catalytic Enantioselective Bromoaminocyclization and Bromocycloetherification. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000845] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Haitao Wang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE) College of Pharmacy Jinan University Guangzhou 510632 People's Republic of China
| | - Haijing Zhong
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE) College of Pharmacy Jinan University Guangzhou 510632 People's Republic of China
| | - Xi Xu
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE) College of Pharmacy Jinan University Guangzhou 510632 People's Republic of China
| | - Wei Xu
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE) College of Pharmacy Jinan University Guangzhou 510632 People's Republic of China
| | - Xiaojian Jiang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE) College of Pharmacy Jinan University Guangzhou 510632 People's Republic of China
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13
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Ali M, Li C. Desymmetrization construction of chiral lactones by synergistic Cu(II) complex and organic base. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152106] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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14
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Xiong Y, Yu Y, You Y, Weng J, Lu G. Metal‐Free Aerobic Sulfenyllactonization of Unsaturated Carboxylic Acids with Thiols Using Air as Sole Oxidant. ChemistrySelect 2020. [DOI: 10.1002/slct.202000542] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yan‐Shi Xiong
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Yang Yu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Yi‐Peng You
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Jiang Weng
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Gui Lu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
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15
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Abstract
In the last years there has been an increasing interest in the search for protocols to obtain β-haloenol esters in an efficient and selective manner as they are versatile building blocks in synthetic organic chemistry. In this article, metal-catalyzed transformations allowing the access to both acyclic and cyclic (i.e., haloenol lactones) β-haloenol esters are reviewed. Metal-catalyzed reactions in which these molecules participate as substrates are also discussed.
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16
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Felipe-Blanco D, Gonzalez-Gomez JC. Metal-Free Arylation-Lactonization Sequence of γ
-Alkenoic Acids Using Anilines as Aryl Radical Precursors. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901679] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Diego Felipe-Blanco
- Instituto de Síntesis Orgánica (ISO) y Departamento de Química Orgánica; Universidad de Alicante; Apdo. 99 03080 Alicante Spain
| | - Jose C. Gonzalez-Gomez
- Instituto de Síntesis Orgánica (ISO) y Departamento de Química Orgánica; Universidad de Alicante; Apdo. 99 03080 Alicante Spain
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17
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Gan M, Wang W, Wang H, Wang Y, Jiang X. Enantioselective Halolactonizations Using Amino-Acid-Derived Phthalazine Catalysts. Org Lett 2019; 21:8275-8279. [PMID: 31584284 DOI: 10.1021/acs.orglett.9b03028] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Amino-acid-derived phthalazine catalysts have been designed and synthesized for enantioselective halolactonization of prochiral dienoic acids. The scope of the reaction is evidenced by 17 examples of spiro α-exo-methylene-halolactones with up to 99.8% enantiomeric excess. The resulting enantio-enriched spiro halolactone products are found to exhibit potent antitumor effects. In addition, both antipodes of products with equally excellent enantioselevity could be obtained since a pair of enantiomeric catalysts is guaranteed.
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Affiliation(s)
- Min Gan
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy , Jinan University , Guangzhou 510632 , China
| | - Wei Wang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy , Jinan University , Guangzhou 510632 , China
| | - Haitao Wang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy , Jinan University , Guangzhou 510632 , China
| | - Yuqiang Wang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy , Jinan University , Guangzhou 510632 , China
| | - Xiaojian Jiang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy , Jinan University , Guangzhou 510632 , China
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18
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Wang W, He H, Gan M, Wang H, Wang Y, Jiang X. Enantioselective Syntheses of α‐
exo
‐Methylene‐Lactones via Organocatalytic Halolactonization. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900728] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wei Wang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Haoquan He
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Min Gan
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Haitao Wang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Yuqiang Wang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
| | - Xiaojian Jiang
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of PharmacyJinan University Guangzhou 510632 People's Republic of China
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19
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Wedek V, Van Lommel R, Daniliuc CG, De Proft F, Hennecke U. Organokatalytische, enantioselektive Dichlorierung unfunktionalisierter Alkene. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901777] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Volker Wedek
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstr. 40 48149 Münster Deutschland
| | - Ruben Van Lommel
- General Chemistry Research GroupDepartment of ChemistryVrije Universiteit Brussel (VUB) Pleinlaan 2 1050 Brussels Belgien
| | - Constantin G. Daniliuc
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstr. 40 48149 Münster Deutschland
| | - Frank De Proft
- General Chemistry Research GroupDepartment of ChemistryVrije Universiteit Brussel (VUB) Pleinlaan 2 1050 Brussels Belgien
| | - Ulrich Hennecke
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstr. 40 48149 Münster Deutschland
- Organic Chemistry Research GroupDepartment of Chemistry and Department of Bioengineering SciencesVrije Universiteit Brussel (VUB) Pleinlaan 2 1050 Brussels Belgien
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20
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Wedek V, Van Lommel R, Daniliuc CG, De Proft F, Hennecke U. Organocatalytic, Enantioselective Dichlorination of Unfunctionalized Alkenes. Angew Chem Int Ed Engl 2019; 58:9239-9243. [PMID: 31012510 DOI: 10.1002/anie.201901777] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 03/27/2019] [Indexed: 12/14/2022]
Abstract
The use of a new class of unsymmetrical cinchona-alkaloid-based, phthalazine-bridged organocatalysts enabled the highly enantioselective dichlorination of unfunctionalized alkenes. In combination with the electrophilic chlorinating agent 1,3-dichloro-5,5-dimethylhydantoin (DCDMH) and triethylsilyl chloride (TES-Cl) as the source of nucleophilic chloride, 1-aryl-2-alkyl alkenes were dichlorinated with enantioselectivities of up to 94:6 er. Initial mechanistic investigations suggest that no free chlorine is formed, and by replacement of the chloride by fluoride, enantioselective chlorofluorinations of alkenes are possible.
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Affiliation(s)
- Volker Wedek
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstr. 40, 48149, Münster, Germany
| | - Ruben Van Lommel
- General Chemistry Research Group, Department of Chemistry, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussels, Belgium
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstr. 40, 48149, Münster, Germany
| | - Frank De Proft
- General Chemistry Research Group, Department of Chemistry, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussels, Belgium
| | - Ulrich Hennecke
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstr. 40, 48149, Münster, Germany.,Organic Chemistry Research Group, Department of Chemistry and Department of Bioengineering Sciences, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussels, Belgium
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21
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Arai T, Horigane K, Watanabe O, Kakino J, Sugiyama N, Makino H, Kamei Y, Yabe S, Yamanaka M. Association of Halogen Bonding and Hydrogen Bonding in Metal Acetate-Catalyzed Asymmetric Halolactonization. iScience 2019; 12:280-292. [PMID: 30731356 PMCID: PMC6365408 DOI: 10.1016/j.isci.2019.01.029] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 12/26/2018] [Accepted: 01/18/2019] [Indexed: 12/24/2022] Open
Abstract
Cooperative activation using halogen bonding and hydrogen bonding works in metal-catalyzed asymmetric halolactonization. The Zn3(OAc)4-3,3'-bis(aminoimino)binaphthoxide (tri-Zn) complex catalyzes both asymmetric iodolactonization and bromolactonization. Carboxylic acid substrates are converted to zinc carboxylates on the tri-Zn complex, and the N-halosuccinimide (N-bromosuccinimide [NBS] or N-iodosuccinimide [NIS]) is activated by hydrogen bonding with the diamine unit of chiral ligand. Halolactonization is significantly enhanced by the addition of catalytic I2. Density functional theory calculations revealed that a catalytic amount of I2 mediates the alkene portion of the substrates and NIS to realize highly enantioselective iodolactonization. The tri-Zn catalyst activates both sides of the carboxylic acid and alkene moiety, so that asymmetric five-membered iodolactonization of prochiral diallyl acetic acids proceeded to afford the chiral γ-butyrolactones. In the total description of the catalytic cycle, iodolactonization using the NIS-I2 complex proceeds with the regeneration of I2, which enables the catalytic use of I2. The actual iodination reagent is I2 and not NIS.
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Affiliation(s)
- Takayoshi Arai
- Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan; Soft Molecular Activation Research Center (SMARC), Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan; Chiba Iodine Research Innovation Center (CIRIC), 1-33 Yayoi, Inage, Chiba 263-8522, Japan.
| | - Kodai Horigane
- Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Ohji Watanabe
- Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Junki Kakino
- Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Noriyuki Sugiyama
- Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Hiroki Makino
- Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Yuto Kamei
- Department of Chemistry, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8588, Japan
| | - Shinnosuke Yabe
- Department of Chemistry, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8588, Japan
| | - Masahiro Yamanaka
- Department of Chemistry, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8588, Japan; Research Center for Smart Molecules, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8588, Japan.
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22
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Yousefi R, Struble TJ, Payne JL, Vishe M, Schley ND, Johnston JN. Catalytic, Enantioselective Synthesis of Cyclic Carbamates from Dialkyl Amines by CO 2-Capture: Discovery, Development, and Mechanism. J Am Chem Soc 2018; 141:618-625. [PMID: 30582326 DOI: 10.1021/jacs.8b11793] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Cyclic carbamates are a common feature of small-molecule therapeutics, offering a constrained hydrogen bond acceptor that is both polar and sterically small. Methods for their preparation most often focus first on amino alcohol synthesis and then reaction with phosgene or its equivalent. This report describes an enantioselective synthesis of cyclic carbamates in which carbon dioxide engages an unsaturated basic amine, facilitated by a bifunctional organocatalyst designed to stabilize a carbamic acid intermediate while activating it toward subsequent enantioselective carbon-oxygen bond formation. Six-membered cyclic carbamates are prepared in good yield with high levels of enantioselection, as constrained 1,3-amino alcohols featuring a chiral tertiary alcohol carbon. Spectroscopic analysis (NMR, DOSY) of various substrate-reagent combinations provides insight into the dominant species under the reaction conditions. Two peculiar requirements were identified to achieve highest consistency: a "Goldilocks" amount of water and the use of a noncrystalline form of the ligand. These atypical features of the final protocol notwithstanding, a diverse range of products could be prepared. Their functionalizations illustrate the versatility of the carbamates as precursors to enantioenriched small molecules.
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Affiliation(s)
- Roozbeh Yousefi
- Department of Chemistry and Vanderbilt Institute of Chemical Biology , Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Thomas J Struble
- Department of Chemistry and Vanderbilt Institute of Chemical Biology , Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Jenna L Payne
- Department of Chemistry and Vanderbilt Institute of Chemical Biology , Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Mahesh Vishe
- Department of Chemistry and Vanderbilt Institute of Chemical Biology , Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Nathan D Schley
- Department of Chemistry and Vanderbilt Institute of Chemical Biology , Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Jeffrey N Johnston
- Department of Chemistry and Vanderbilt Institute of Chemical Biology , Vanderbilt University , Nashville , Tennessee 37235 , United States
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23
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Nishikawa Y, Hamamoto Y, Satoh R, Akada N, Kajita S, Nomoto M, Miyata M, Nakamura M, Matsubara C, Hara O. Enantioselective Bromolactonization of Trisubstituted Olefinic Acids Catalyzed by Chiral Pyridyl Phosphoramides. Chemistry 2018; 24:18880-18885. [PMID: 30230634 DOI: 10.1002/chem.201804630] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Indexed: 11/11/2022]
Abstract
Enantioselective bromolactonization of trisubstituted olefinic acids producing synthetically useful chiral lactones with two contiguous asymmetric centers has remained mainly unexplored except for the 6-exo cyclization mode. In this work, the 5-exo- and 6-endo modes of bromocyclization of trisubstituted olefinic acids were enabled for the first time using N-bromosuccinimide and a pyridyl phosphoramide catalyst. The utility of the resulting bromolactones was demonstrated by transformations harnessing reactive alkyl bromide moieties without losing stereochemical information. Optimization studies and control experiments revealed that the basicity of pyridine moieties and presence of N-H protons in the phosphoramide species strongly affected both the reactivity and enantioselectivity parameters.
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Affiliation(s)
- Yasuhiro Nishikawa
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya, Aichi, 468-8503, Japan
| | - Yuhta Hamamoto
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya, Aichi, 468-8503, Japan
| | - Rika Satoh
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya, Aichi, 468-8503, Japan
| | - Naho Akada
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya, Aichi, 468-8503, Japan
| | - Shuhei Kajita
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya, Aichi, 468-8503, Japan
| | - Marina Nomoto
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya, Aichi, 468-8503, Japan
| | - Megumi Miyata
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya, Aichi, 468-8503, Japan
| | - Madoka Nakamura
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya, Aichi, 468-8503, Japan
| | - Chinatsu Matsubara
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya, Aichi, 468-8503, Japan
| | - Osamu Hara
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya, Aichi, 468-8503, Japan
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24
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Sha W, Ni S, Han J, Pan Y. Access to Alkyl-Substituted Lactone via Photoredox-Catalyzed Alkylation/Lactonization of Unsaturated Carboxylic Acids. Org Lett 2018; 19:5900-5903. [PMID: 29039204 DOI: 10.1021/acs.orglett.7b02899] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient photoredox-catalyzed alkylation/lactonization reaction of unsaturated carboxylic acids by using alkyl N-hydroxyphthalimide esters as alkylation reagents has been developed. Varieties of redox-active esters derived from aliphatic carboxylic acids were proved viable in this method, affording alkyl substituted lactones in moderate to good yields. This redox-neutral procedure features mild conditions and operational simplicity, which provides a new strategy for the synthesis of alkyl substituted lactones.
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Affiliation(s)
- Wanxing Sha
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University , Nanjing 210093, China
| | - Shengyang Ni
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University , Nanjing 210093, China
| | - Jianlin Han
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University , Nanjing 210093, China
| | - Yi Pan
- School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University , Nanjing 210093, China
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25
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Fricke C, Wilking M, Daniliuc CG, Hennecke U. An Enantioselective Iodolactonization/Cross-Coupling Protocol for the Synthesis of Highly Substituted Enol Lactones. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800642] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Christoph Fricke
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstr. 40 48149 Münster Germany
| | - Michael Wilking
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstr. 40 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstr. 40 48149 Münster Germany
| | - Ulrich Hennecke
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstr. 40 48149 Münster Germany
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26
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Klosowski DW, Hethcox JC, Paull DH, Fang C, Donald JR, Shugrue CR, Pansick AD, Martin SF. Enantioselective Halolactonization Reactions using BINOL-Derived Bifunctional Catalysts: Methodology, Diversification, and Applications. J Org Chem 2018; 83:5954-5968. [PMID: 29717607 PMCID: PMC5984189 DOI: 10.1021/acs.joc.8b00490] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A general protocol is described for inducing enantioselective halolactonizations of unsaturated carboxylic acids using novel bifunctional organic catalysts derived from a chiral binaphthalene scaffold. Bromo- and iodolactonization reactions of diversely substituted, unsaturated carboxylic acids proceed with high degrees of enantioselectivity, regioselectivity, and diastereoselectivity. Notably, these BINOL-derived catalysts are the first to induce the bromo- and iodolactonizations of 5-alkyl-4( Z)-olefinic acids via 5- exo mode cyclizations to give lactones in which new carbon-halogen bonds are created at a stereogenic center with high diastereo- and enantioselectivities. Iodolactonizations of 6-substituted-5( Z)-olefinic acids also occur via 6- exo cyclizations to provide δ-lactones with excellent enantioselectivities. Several notable applications of this halolactonization methodology were developed for desymmetrization, kinetic resolution, and epoxidation of Z-alkenes. The utility of these reactions is demonstrated by their application to a synthesis of precursors of the F-ring subunit of kibdelone C and to the shortest catalytic, enantioselective synthesis of (+)-disparlure reported to date.
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Affiliation(s)
- Daniel W. Klosowski
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712
| | - J. Caleb Hethcox
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712
| | | | | | | | | | - Andrew D. Pansick
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712
| | - Stephen F. Martin
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712
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27
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Jiang X, Liu S, Yang S, Jing M, Xu L, Yu P, Wang Y, Yeung YY. Enantioselective Bromolactonization of Deactivated Olefinic Acids. Org Lett 2018; 20:3259-3262. [DOI: 10.1021/acs.orglett.8b01125] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Xiaojian Jiang
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardiocerebrovascular Diseases, Jinan University College of Pharmacy, Guangzhou 510632, People’s Republic of China
| | - Shenghui Liu
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardiocerebrovascular Diseases, Jinan University College of Pharmacy, Guangzhou 510632, People’s Republic of China
| | - Si Yang
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardiocerebrovascular Diseases, Jinan University College of Pharmacy, Guangzhou 510632, People’s Republic of China
| | - Mei Jing
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardiocerebrovascular Diseases, Jinan University College of Pharmacy, Guangzhou 510632, People’s Republic of China
| | - Lipeng Xu
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardiocerebrovascular Diseases, Jinan University College of Pharmacy, Guangzhou 510632, People’s Republic of China
| | - Pei Yu
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardiocerebrovascular Diseases, Jinan University College of Pharmacy, Guangzhou 510632, People’s Republic of China
| | - Yuqiang Wang
- Institute of New Drug Research and Guangzhou Key Laboratory of Innovative Chemical Drug Research in Cardiocerebrovascular Diseases, Jinan University College of Pharmacy, Guangzhou 510632, People’s Republic of China
| | - Ying-Yeung Yeung
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
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28
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Luo J, Cao Q, Cao X, Zhao X. Selenide-catalyzed enantioselective synthesis of trifluoromethylthiolated tetrahydronaphthalenes by merging desymmetrization and trifluoromethylthiolation. Nat Commun 2018; 9:527. [PMID: 29410415 PMCID: PMC5802806 DOI: 10.1038/s41467-018-02955-0] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 01/09/2018] [Indexed: 11/09/2022] Open
Abstract
Trifluoromethylthiolated molecules are an important class of biologically active compounds and potential drug candidates. Because of the lack of efficient synthetic methods, catalytic enantioselective construction of these molecules is rare and remains a challenge. To expand this field, we herein disclose a bifunctional selenide-catalyzed approach for the synthesis of various chiral trifluoromethylthiolated tetrahydronaphthalenes bearing an all-carbon quaternary stereocenter with gem-diaryl-tethered alkenes and alkynes by merging desymmetrization and trifluoromethylthiolation strategy. The products are obtained in high yields with excellent enantio- and diastereo-selectivities. This method can be applied to the desymmetrization and sulfenylation of diols as well. Computational studies reveal that selenide can activate the electrophilic reagent better than sulfide, confirming the higher efficiency of selenide catalysis in these reactions. On the basis of the theoretical calculations, an acid-derived anion-binding interaction is suggested to exist in the whole pathway and accounts for the observed high selectivities. Catalytic enantioselective synthesis of trifluoromethylthiolated molecules remains a challenge. Here, the authors report a bifunctional selenide-catalyzed approach for the synthesis of structurally complex chiral trifluoromethylthiolated tetrahydronaphthalenes by merging desymmetrization and trifluoromethylthiolation.
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Affiliation(s)
- Jie Luo
- Institute of Organic Chemistry and MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, PR China
| | - Qingxiang Cao
- Institute of Organic Chemistry and MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, PR China
| | - Xiaohui Cao
- Institute of Organic Chemistry and MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, PR China.
| | - Xiaodan Zhao
- Institute of Organic Chemistry and MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, PR China.
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29
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Knowe MT, Danneman MW, Sun S, Pink M, Johnston JN. Biomimetic Desymmetrization of a Carboxylic Acid. J Am Chem Soc 2018; 140:1998-2001. [PMID: 29400455 DOI: 10.1021/jacs.7b12185] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The enantioselective desymmetrization of carboxylic acids by chiral Brønsted base catalysis is reported, leading to bridged bicyclic lactones with up to 94% ee. Crystallographic analysis of a substrate-catalyst complex suggests an origin of stereocontrol, reminiscent of functional Brønsted bases in biological settings, and enabled reaction optimization. The products contain an all-carbon quaternary stereocenter and can be derivatized to functionalized cyclopentanes.
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Affiliation(s)
- Matthew T Knowe
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University , Nashville, Tennessee 37235-1822, United States
| | - Michael W Danneman
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University , Nashville, Tennessee 37235-1822, United States
| | - Sarah Sun
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University , Nashville, Tennessee 37235-1822, United States
| | - Maren Pink
- Indiana University Molecular Structure Center , Bloomington, Indiana 47405, United States
| | - Jeffrey N Johnston
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University , Nashville, Tennessee 37235-1822, United States
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